Irgun launched a series of attacks which lasted until the
beginning of World War
II. All told, Irgun attacks against Arab targets resulted in at
least 250 Arab deaths during this period. Following is a list of
attacks resulting in death attributed to Irgun that took place
during the 1930s. The Irgun conducted at least 60 operations
altogether during this period.[8][9][10]

107-120 Palestinians killed and massacred (the estimate generally
accepted by scholars, instead the first announced number of 254)
during and after the battle at the village of Deir Yassin near Jerusalem, by 132 Irgun and 60 Lehi fighters.

^Milstein, Uri (1998) [1987] (in Hebrew,
English version translated and edited by Alan Sacks). History
of the War of Independence IV: Out of Crisis Came Decision.
Lanhan, Maryland: University Press of America, Inc.. ISBN
0-7618-1489-2.: Chapter 16: Deir
Yassin, Section 12: The Massacre, page 376-381